2201.030 Persicaria (L.) Mill. - Knotweeds

Description of the genus

Annual or perennial herbs, usually (in ours) erect. Ochreae present. Leaves large compared to Polygonum, usually more than 5 cm. Each inflorescence with usually more than 6 flowers, some or all inflorescences terminal, bracts similar to the leaves. Perianth segments mostly 5, petaloid, not enlarging in fruit. Stamens 8 (or 4-7 by reduction). Styles 2-3; nut biconvex or 3-angled.

Worldwide: c. 150 species, ± cosmopolitan

Zimbabwe: 9 taxa.

The larvae of the following species of insect eat species of this genus:
Comostilopsis stillata (Pink-laced Emerald)
Rhodometra sacraria (Vestal)
Persicaria limbata

Links to taxa:     View: living plant images - herbarium specimen images - all images for this genus

SpeciesLinks to mapsFZ divisionsContent
capitata (Buch.-Ham. ex D. Don) H. GrossE,SDescription, Image
decipiens (R. Br.) K.L. WilsonN,W,C,E,SDescription, Image
hystricula (J. Schust.) SojákW,C
lapathifolia (L.) GrayN,W,C,E,SDescription
limbata (Meisn.) HaraN,W,C,SDescription, Image
madagascariensis (Meisn.) S. Ortiz & PaivaN,W,C,E,SDescription, Image
senegalensis (Meisn.) SojákN,W,C,E,SDescription, Image
setosula (A. Rich.) K.L. WilsonN,E
strigosa (R. Br.) H. GrossW,C,EDescription, Image

Other sources of information about Persicaria:

Our websites:

Flora of Zimbabwe: cultivated Persicaria
Flora of Mozambique: Persicaria
Flora of Zambia: Persicaria

External websites:

ePIC (electronic Plant Information Center): Persicaria
Flora Zambesiaca web site: Persicaria
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network) taxonomy for plants report for Persicaria
IPNI (International Plant Names Index): Persicaria
Kew Herbarium catalogue: Persicaria

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-14

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2014). Flora of Zimbabwe: Genus page: Persicaria.
http://www.zimbabweflora.co.zw/speciesdata/genus.php?genus_id=516, retrieved 17 September 2014

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